Cita APA (7a ed.)

Worster, D. (2008). A passion for nature: The life of John Muir. Oxford University Press.

Cita Chicago Style (17a ed.)

Worster, Donald. A Passion for Nature: The Life of John Muir. Oxford ; New York: Oxford University Press, 2008.

Cita MLA (9a ed.)

Worster, Donald. A Passion for Nature: The Life of John Muir. Oxford University Press, 2008.